Cutting machine



E. SEHL CUTTING MACHINE March 30 1926.

Filed Dec. 28, 1923 stitching-room before the lined upper has PatentedMar. 30, I1926.`

UNITED STATES EUGENE SEHL, OF ST. LOUIS, MISSOURI, ASSIGNOR TO UNITEDSHOE MACHINERY COR Y N 1,578,375 PATENT OFFICE.

PORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

CUTTING MACHINE.

Application ld December 28, 1923. Serial No. 683,183.

To all 'whom t may concern? Be it known that I, EUGENE SEHL, a

citizen of the United States, residing at St.

Louis, and State of Missouri, have invented certain Improvements inCutting Machines, of which the following description, in connection withthe accompanying drawings, is a specification, like'reference characterson the drawings indicating like parts in the several figures.

, This invention relates to cutting machines and is herein illustratedas embodied in a machine particularly designed for use in themanufacture of boots and shoes.

In the manufacture of certain kinds of fancy shoes it is customary todie out ornamental openings in the upper,to attach the lining to theupper by stitches which extend along the edges of the openings intheupper, and later to cut out those portions of the lining which areexposed by the diedout openings in the upper. The portions of the liningwhich are thus exposed are commonly known as panels, and the operationof cutting them out as panel cutting, and these terms will be used topromote brevity.

' The panel cutting may be done in the been attached to the`sole orinsole and while it, or portions of it, may be spread out substantiallflat; but preferably the cutting is done 1n the packing-room after theshoe is otherwise complete, since, if the cutting is done in thestitching-room, the subsequent stretching of the upper during thepullingover and lasting operations is liable to distort the shapes of theornamental openings.

. Whether the cutting-out of the panels is done in the stitching-room orin the pack- 1ng-room,1t 1s necessary to provide means for piercing thepanels to start the cut and tor to move the Work so as to present afresh panel-to the cutter. `As soon as this presentation has been made,the cutter is once more thrown into operation, the first downwardAmovement of it serving, through its pointed portion, to pierce the panelsol as to startA the cut.

According to another feature of the invention, the portion of the worklwhich is being operated upon is supported at the end of a member ofsmall` cross-section, which is shaped and positioned to provide aboutits work supporting portion a free and unobstructed space.v In theillustrative -machine the shear member referred to above theinvenscribed as embodied in an illustrative machine and pointed out inthe appendedclaims. p

Referring now to the accompanying drawings, v

Figure 1 is a perspective of a machine in which the present invention isembodied.

Figure 2 is a perspective showing on an enlarged scale part of thecutter operating mechanism, and

Figure 3 is a perspective showing a shoe in process of being operatedupon.

The operative parts of the machine, ex-

cept the Work support, are carried at the end of an overhan ing arm 5which ex-.

tends horizontally rom a column' 7, Said column rising to ,such a heightabove the bench upon which the machine stands that room is provided`beneath the cutter' [to at the locality being operated upon issupported Well above the level of the bench upon a shear member 9mounted at the end of a slender support herein shown as an np-, rightpost 11. Theshear member is in the form of a truncated cone freelyrevoluble upon a .horizontal pivot 13 ycarried at the extreme upper endof the post. A reciprocating cutter 15 having a pointed portion 17 rubsagainst the eX osedwtlat end 18 of the shear member 9 an `cooperateswith the shear member .to sever the lining material.

The cutter is carried by a block 19 which "swing a shoev or a closedvamp.- The work l'ooA is adjustably fastenedby screws 21 to the lowerend of a cutter-bar 23, the adjustment being in a direction to permitthe cutter to be positioned properly with respect to the fiat face ofthe shear member 9.

It is necessary, when-one panel has been cut out, to raise the cutterabove the Work so as to permit a second panel to be' moved into positionto be operated upon; and it is also desirable that, when the cutter is'raised, its reciprocation Ashould cease so that the operator mayposition lthe work accurately vwith respect to the pointed portion 17 soas to be able to start the new cut in exactly the desired locality. Tothis end, the cutterbar 23 is vurged upwardly at all times by a spring25 so that when aswill be presently explained, the cutter-bar isdisconnected from its actuating mechanism, the bar and cutter will beheld in raised position. The cutter-bar is reciprocated from aneccentric 27 on the driving shaft 29 through a yoke 31 the tail of whichis, fastened by a pin 33 to one end of a rock-shaft 35 the other end ofwhich carries an arm 37 on the. outer end of which is a roller 39. Thisroller normally extends into a horizontal slot in the cutterbar 23 sothat oscillation 'of the rockshaft 35 causes reciprocation of thecutter-bar. In order to permit the cutter-bar to be disv connected fromthe roller 39, the rock-shaft 35 is slidable in its bearings 41, 43being normally held in the position shown but being capable of beingmoved to the right as viewed in Fig. 1 so as to withdraw the roller39from the slot in the cutter-bar. j

Fast to one end of a small rock-shaft 45 is an arm 47 having at itslower end a yoke 49 which straddles the rock-shaft 35 and is held frommovement longitudinally of the rock-shaft by two collars which are fastto the shaft. The hub of the arm 47 has a 'lug 51 the under side ofwhich is engaged by the upper end of a compression spring 53 seated in asocketin a stationary part of the machine, the spring acting Lto urgethe rockshaft 35 to the left and thus to hold the roller 39 in the slotin the cutter-bar. In order to provide means for sliding the rock-shafttofthe right, when desired, there is fast to the far end of the smallrock-shaft 45 an arm 55 having at its lower end a finger-piece .i 57.Normally the parts are in the positions shown in Fig. 1 in which thecutter is connected with its driving mechanism and is being rapidlyreciprocated. At any time, however, the operator may push'l thefingerpiece 57 to the right whereupon the connection is broken, and thecutter-bar. is raised by the spring 25 into the position shown in Fig.2. The arm 37 continues to oscillateg' but, Vsince the roller 39 isv outof register ,with'the slot'in the cutter-bar, no reciprocaition isimpartedto thebar. When, now, l

the operator desires to lower the knife so as tol cause the pointedportion 17 to pierce the work, he pushes down upon a finger-piece 59.This iinger-piecehas -a depending portion 61 between which and a flatface on a depending portion of the block 9 the cutter is adjustably heldby screws 63 which pass through a' vertical slot (not shown) formed inthe upper portion 'of the stem 4of the cutter. Pushing down upon thenger-piece 59 lowers the cutter-bar and thereby brings the slot in itdown into position to receive once more the roll 39 on the oscillatingarm 37, the spring 53 serving to cause the rolly to enter the slot.

In order to aid in guiding the work as well as to prevent injury by thecutter both to the work and to the fingers of the operator, a combinedgage and guard member 65 is provided, said member having'a portion 165extending in a plane substantially parallel to the plane of the cutterand a portion 265 extending in` a plane substanv tially at right anglesthereto. The portion 165 is adapted to runin contact with the edge ofthe opening in the upper and thereby serve both to guide the work and toprevent accidental cutting `of the upper. The

portion 265 is adapted to prevent injury to of which bears one end of alever 77. This lever is pivoted near its middle at 79 to the stationaryarm v5 and at its left-hand end to the upper end of a treadle rod 81,the lower end of whichJis connected with a treadle, not shown. vConsequently, when the treadle is depressed, the member 65 israised.lThe rod 67 is urged downwardly at all times by a coiled spring 70 thelower end of which rests upon the collar 73 and the upper end of whichbears against the under side of a sleeve 83 having a knurled head bywhich it may be turned to vary the tension of the spring. The rod 67passes up through this sleeve andhas threaded upon its upper end a ynut85 by which the downward movement of the rod 67, and with it the guard65, is limited. In practice the nut is adjusted into a position topermit the combined guard an gage 65 to ride easily over the panel withthe'lower ortion of its vertical face (the one expose to View in Fig. 1)in contact with the edge of the opening in the cause the cutter to riseintov the position. shown in Fig. 2 and come Ato rest. The

jtreadle is then depressed to raise the guard workturning it as may benecessary toy cause the panel to be cut out. r

By mounting the shear member at the I end of a slender support such asthe upright which the vshear member is mounted, said.4

ost shown, a free and unobstructed space 1s provided soas to permit theWorlr to be properly manipulated during the cutting operation. Althoughthe invention has been set forth as embodied in a particular machine, itshould be-understood that the invention is not limited in the scope ofits application to the particular machine which has been shownanddescribed.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is 1. A machine for cuttingpanels from the upper of a shoehaving, in'combination, a work supportadapted to enter a shoe so as to support the upper from the insidethereof and to permit the shoe to be moved With respect to it, a cutterhaving a portion adapted to pierce a panel, and means for separating thecutter andl support suiiicientvly to permit the shoe to be movedI so asto bring a panel into operative position with respect to the cutterpreparatory to the piercing operation.l

2. A machlne for cutting panels from the upper of a shoe having, incombination, a

cutter having a pointed portion adapted to pierce a panel, meansforreciprocating the cutter, .a shear memberwith which the cuttercooperates, and a support at one end of support beingof smallvcross-section and adapted to enter the shoe and to permit the 'I shoeto be moved with respect to it to facilitate the cutting outf'o'thepanels.

3.' A machine for cuttinga panel from the` y upper of ash'oe# having,.incombination, a

- cutter adapted yiirst to pierce the panel and ,then to cut/it out,means for reciprocating the cutter, a support adapted to enter the shoeso as to 'support'the desired portion f of-the upper from the insidethereof' and to ermit movement. of the shoe with respect to 1t, theconstruction and arrangement being such that the cutter' maybe renderedinoperative vWhen desired so as. to'permit a selected panel .to'bebrought into its path of recipr cation, and a gage adapted to contactwith the edge of the upper to facilitate the piercing of the panelati'the desired locality and'to aid in guiding the work during thecuttingout of the panel.

fi. A machine of the class' described having, in combination, a framehaving an overhanging arm, a cutter mounted upon the arm, awork-engaging member located close to the 'cutter and also mounted uponthe arm, said cutter having a pointed portion adapted to pierce theWork, mechanism for reciprocatin the cutter, means for normally holdingt e cutter disconnected from its reciprocating mechanism and raisedabove the cutter from its reciprocating vmechanism and for raising ituntil the pointed portion is above thework, avshear member arranged tocooperate with the cutter, and a support of comparativelysmallcross-section upon which the shear member is mounted,vv there being afree and unobstructed space about the support to permit the Work to beturned freely. .y

6. A machine of the class described having, in combination, a framehaving an overhan'ging arm', a cutter. anda combined cutter guardandWork gage mounted on the arm,

' said cutter having a pointed portion adapted to ierce the Work,mechanism for reciproeating the cutter, means ,for -disconnecting thecutter from its reciprocating mechanism and for raising it until thepointed portion is above the Work, a shear member arranged to cooperatewith lthe cutter, and a substantially upright post of smallcross-section upon which the shear member is rotatably mounted. V

7. A-machine for cutting a panel 'from the upper ofa shoe having, 1ncombination, a cutter vhaving a pointed ortion adapted-to pierce thepanel, a com ined cutter-guard and work gage adapted. t'o ride on fthepanel close to the edge o the opening in the upper, a shear memberadapted to cooperate ioo with the cutter, and a supportofcomparatively-(small cross-section upon which the shear member ismounted, there being a free-and unobstructed space about the shearmember to permit the shoe to be manipulated so as to cause the cutter tosever the panel completely close to the edge of the opening in theupper.

8. A machine for cutting a panel from the upper of a shoe having, incombination, a

cutter having a pointed portion adapted to pierce the panel, a combinedcutter-guard and work ga'ge adapted to ride on the panel close to theedge of the opening in the upper, a shear member adapted to cooperatewith the cutter, and a substantially; upright post upon the upper end ofwhich. the shear member is mounted, there being a free and unobstructedspace about the shear member to permit the upper to be manipulated so asto cause the cutter tb sever the panel completely close to the edge ofthe opening in the upper,

9.' A machine for cutting panels from the upper of a shoe having, inlcombination, a

cutter, means for operating the cutter, a

shear member, and a support at one end of which the shear member ismounted, said support being of small cross-section and shaped andpositioned to provide about the shear member a free and unobstructedspace to permit ready manipulation of the work.

10. A. machine of the class described having, in combination, a supportfor a piece of work having panels therein, saidv support beingshaped andpositioned to permittlie work to be turned freely,l a cutter having apointed portion, means for reciprocating the cutter, andoperator-controlled means for raising the cutter until its pointedportion is above the level of the work and for disconnecting the cutterfrom its reciprocating mechanism so that the Work may be moved intoposition to present a fresh panel to the cutter while Vsaid cutter isstationary.

1l. A machine of the class described having, in combination, a supportfor a piece of work having panels thereinfa cutter havmg a downwardlyextending pointed portion, means for holding the cutter stationary.

for lowering the cutter and reciprocating` it in such manner that thepoint remains below the level of the work support.

12. A, machine for cutting'panels from a shoe having, in combination, asupport for the shoe constructed and arranged toventer the shoe and topermit the panels to be fed over it,a cutter, means whereby the cutter,and support may be held spaced 'from each other a distance suicient topermit a panel to be brought into position between the knife and thesupport, and means for causing relative movement of approach between thecutter and the support to .cause the cutter to pierce the'panel and forimparting to the cutter a reciprocating movement.

13. A machine for cutting panels from a shoe having, in combination, asupport for the shoe constructed andarranged to enter the shoe and topermit the panels to be fed over it, a cutter, means whereby the-cuttermay be held'stationary above the support to permit a panel to be broughtinto position between it and the support, and means for lowering thecutter and imparting to it a reciprocating movement.

In testimony whereof I have signed my name to this specification.

EUGENE SEHL.

